Advice on careers

Good morning, I am 28 years old and a single mum to a beautiful 2 1/2 year old. I have reached a stage were I am currently on benefits as no help from Dad and my son goes to nursery only 15 hours a week, I am running a house my son food e.g. no full time wage I earn will cover all of this plus childcare I am kind ofvatuck, I have worked since the age of sixteen and I'm worried about my future does anyone have any advice how to get out of this rut and maybe use this time to study so when he goes back to school I can get a well paid job but I can't afford ou fees does anyone no of any help or advice in general would be great? All I want is to to provide the best life for my son and be happy in myself to but I feel like every day is just on rewind at the moment ☺